When, how often and with what?

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Period and frequency of fertilization

Already at the plants - usually in May - may canna be fertilized or is it worth the Potting soil for example add compost. The last application of fertilizer should be done moderately in September.

also read

  • Canna: What should you know about the tubers?
  • Is canna poisonous?
  • The perfect location for canna

The fertilizer should be applied regularly until flowering to stimulate growth and create a good base for the flowers. Cannas in the tub are fertilized every week. at Cannas in the garden In the field, a monthly supply of fertilizer is sufficient.

Suitable fertilizers - in the garden and in the bucket

You don't have to spend a lot of money on healthy cannabis plants. If your flower tube is in the bucket, more usual is sufficient Flower fertilizer.(€ 71.80 at Amazon *) If, on the other hand, you have planted your canna outdoors in the garden, it is recommended to use Fertilize Compost or Horse manure. A gift Horn shavings(€ 32.93 at Amazon *) does no harm either.

Basically, as with other plants, the fertilizer should primarily contain nitrogen, potassium and phosphorus. Small to medium amounts of:

  • magnesium
  • sulfur
  • boron
  • zinc

Fertilize depending on the stage of growth

If you have the nerve, be sure to fertilize canna depending on its stage of growth. Before flowering starts (during growth) the flower tube needs a lot of nitrogen. Once flowering begins, there should be less nitrogen in the fertilizer.

A moderate amount of fertilizer is advisable in September. Then Canna should be fertilized with potash. Potash ensures that the rhizomes mature well and can be better overwintered. Alternatively, the rhizomes suck the power from the leaves and stems.

Tips & Tricks

Brown leaves and weak flowers are a sign of nutritional deficiency. If you've fertilized properly, you can tell by healthy cannabis plants.